To generate postman reporting using newman , you first need to have newman installed in your system. you can follow my post on step by step newman integration with postman.

Once newman is installed , run the following command to generate the cli report.

$ newman run -r cli,json

External Reporters

Newman also provides a way to generate HTML report , before that you need to have Newman HTML package installed.

$ npm install -g newman-reporter-html

Once it is installed you can run your collection using below cli command

$ newman run -r cli,html

The report generated will look like below :